tofsee | 23689438b3f8ea7ce154f6169f3941b13121c2887055ef3dbcb73b2cb414c2f4

General

Target

2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe
Size

13.2MB
MD5

954c53ce4a1dc631c1313f0e31164ce3
SHA1

f4a9581315b7d2b22592f2786188fdae32c019c4
SHA256

23689438b3f8ea7ce154f6169f3941b13121c2887055ef3dbcb73b2cb414c2f4
SHA512

6ebf7e56713c776ed13f5b846472e46aaba3d2fb0dc1ac2a5a0afc4165c56cafc4895541d5f7bc30df8b7830abf5d6152acbfc29dd8421384accd3831432af90
SSDEEP

6144:cLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQV:RTYe+D2jFu+iZoUFhAz

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
3084	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\rvecvnql\ImagePath = "C:\\Windows\\SysWOW64\\rvecvnql\\xrritctv.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2436272344-4274332273-444425594-1000\Control Panel\International\Geo\Nation	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe

Deletes itself 1 IoCs

pid	Process
1396	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4988	xrritctv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4988 set thread context of 1396	4988	xrritctv.exe	104

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
3148	sc.exe
4352	sc.exe
2892	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
696	2308	WerFault.exe	82
4080	4988	WerFault.exe	99

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xrritctv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2308 wrote to memory of 1432	2308	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe	86
PID 2308 wrote to memory of 1432	2308	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe	86
PID 2308 wrote to memory of 1432	2308	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe	86
PID 2308 wrote to memory of 1632	2308	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe	90
PID 2308 wrote to memory of 1632	2308	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe	90
PID 2308 wrote to memory of 1632	2308	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe	90
PID 2308 wrote to memory of 3148	2308	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe	92
PID 2308 wrote to memory of 3148	2308	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe	92
PID 2308 wrote to memory of 3148	2308	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe	92
PID 2308 wrote to memory of 4352	2308	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe	95
PID 2308 wrote to memory of 4352	2308	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe	95
PID 2308 wrote to memory of 4352	2308	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe	95
PID 2308 wrote to memory of 2892	2308	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe	97
PID 2308 wrote to memory of 2892	2308	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe	97
PID 2308 wrote to memory of 2892	2308	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe	97
PID 2308 wrote to memory of 3084	2308	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe	100
PID 2308 wrote to memory of 3084	2308	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe	100
PID 2308 wrote to memory of 3084	2308	2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe	100
PID 4988 wrote to memory of 1396	4988	xrritctv.exe	104
PID 4988 wrote to memory of 1396	4988	xrritctv.exe	104
PID 4988 wrote to memory of 1396	4988	xrritctv.exe	104
PID 4988 wrote to memory of 1396	4988	xrritctv.exe	104
PID 4988 wrote to memory of 1396	4988	xrritctv.exe	104

C:\Users\Admin\AppData\Local\Temp\2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2308
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rvecvnql\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1432
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xrritctv.exe" C:\Windows\SysWOW64\rvecvnql\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1632
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rvecvnql binPath= "C:\Windows\SysWOW64\rvecvnql\xrritctv.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3148
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rvecvnql "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4352
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rvecvnql
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2892
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:3084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2308 -s 1040
  2⤵
  - Program crash
  PID:696

C:\Windows\SysWOW64\rvecvnql\xrritctv.exe
C:\Windows\SysWOW64\rvecvnql\xrritctv.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_954c53ce4a1dc631c1313f0e31164ce3_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4988
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1396
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4988 -s 512
  2⤵
  - Program crash
  PID:4080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2308 -ip 2308
1⤵
PID:2508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4988 -ip 4988
1⤵
PID:1612

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\xrritctv.exe

Filesize
11.5MB

MD5
74f24e13b1033e4489653c7f413ebd07

SHA1
600b506d39b6d5fab4d1da5e456932b05cbbad87

SHA256
2c97ad6a990277229bdbaf07d7579d9485d47dbc6652f5f8ecd120c19afb878a

SHA512
9e2cd17e480ed1e90a1ebb95258da755670a38e333b7383d2579de7410af78fe4241666e8fc51c7ed5e91d7641fdbb3c66167d65ebf99ba20d14a85eb4a77f33

Download Submit
memory/1396-11-0x00000000001D0000-0x00000000001E5000-memory.dmp

Filesize
84KB

Download
memory/1396-23-0x00000000001D0000-0x00000000001E5000-memory.dmp

Filesize
84KB

Download
memory/1396-22-0x00000000001D0000-0x00000000001E5000-memory.dmp

Filesize
84KB

Download
memory/1396-21-0x00000000001D0000-0x00000000001E5000-memory.dmp

Filesize
84KB

Download
memory/1396-15-0x00000000001D0000-0x00000000001E5000-memory.dmp

Filesize
84KB

Download
memory/2308-16-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2308-14-0x00000000007F0000-0x00000000008F0000-memory.dmp

Filesize
1024KB

Download
memory/2308-18-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2308-17-0x0000000000700000-0x0000000000713000-memory.dmp

Filesize
76KB

Download
memory/2308-1-0x00000000007F0000-0x00000000008F0000-memory.dmp

Filesize
1024KB

Download
memory/2308-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2308-2-0x0000000000700000-0x0000000000713000-memory.dmp

Filesize
76KB

Download
memory/4988-9-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4988-10-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4988-20-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4988-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads